Large-scale and long-term wildlife research and monitoring using camera traps: a continental synthesis

Author(s)
Bruce, Tom
Amir, Zachary
Allen, Benjamin L
Alting, Brendan F
Amos, Matt
Augusteyn, John
Ballard, Guy-Anthony
Behrendorff, Linda M
Bell, Kristian
Bengsen, Andrew J
Bennett, Ami
Benshemesh, Joe S
Bentley, Joss
Blackmore, Caroline J
Boscarino-Gaetano, Remo
Bourke, Lachlan A
Brewster, Rob
Brook, Barry W
Broughton, Colin
Buettel, Jessie C
Carter, Andrew
Chiu‐Werner, Antje
Claridge, Andrew W
Comer, Sarah
Comte, Sebastien
Connolly, Rod M
Cowan, Mitchell A
Cross, Sophie L
Cunningham, Calum X
Dalziell, Anastasia H
Davies, Hugh F
Davis, Jenny
Dawson, Stuart J
Di Stefano, Julian
Dickman, Christopher R
Dillon, Martin L
Doherty, Tim S
Driessen, Michael M
Driscoll, Don A
Dundas, Shannon J
Eichholtzer, Anne C
Elliott, Todd F
Elsworth, Peter
Fancourt, Bronwyn A
Fardell, Loren L
Faris, James
Fawcett, Adam
Fisher, Diana O
Fleming, Peter J S
Forsyth, David M
Garza‐Garcia, Alejandro D
Geary, William L
Gillespie, Graeme
Giumelli, Patrick J
Gracanin, Ana
Grantham, Hedley S
Greenville, Aaron C
Griffiths, Stephen R
Groffen, Heidi
Hamilton, David G
Harriott, Lana
Hayward, Matthew W
Heard, Geoffrey
Heiniger, Jaime
Helgen, Kristofer M
Henderson, Tim J
Hernandez‐Santin, Lorna
Herrera, Cesar
Hirsch, Ben T
Hohnen, Rosemary
Hollings, Tracey A
Hoskin, Conrad J
Hradsky, Bronwyn A
Humphrey, Jacinta E
Jennings, Paul R
Jones, Menna E
Jordan, Neil R
Kelly, Catherine L
Kennedy, Malcolm S
Knipler, Monica L
Kreplins, Tracey L
L'Herpiniere, Kiara L
Laurance, William F
Lavery, Tyrone H
Le Pla, Mark
Leahy, Lily
Leedman, Ashley
Legge, Sarah
Leitão, Ana V
Letnic, Mike
Liddell, Michael J
Lieb, Zoë E
Linley, Grant D
Lisle, Allan T
Lohr, Cheryl A
Maitz, Natalya
Marshall, Kieran D
Mason, Rachel T
Matheus‐Holland, Daniela F
McComb, Leo B
McDonald, Peter J
McGregor, Hugh
McKnight, Donald T
Meek, Paul D
Menon, Vishnu
Michael, Damian R
Mills, Charlotte H
Miritis, Vivianna
Moore, Harry A
Morgan, Helen R
Murphy, Brett P
Murray, Andrew J
Natusch, Daniel J D
Neilly, Heather
Nevill, Paul
Newman, Peggy
Newsome, Thomas M
Nimmo, Dale G
Nordberg, Eric J
O'Dwyer, Terence W
O'Neill, Sally
Old, Julie M
Oxenham, Katherine
Pauza, Matthew D
Pestell, Ange J L
Pitcher, Benjamin J
Pocknee, Christopher A
Possingham, Hugh P
Raiter, Keren G
Rand, Jacquie S
Rees, Matthew W
Rendall, Anthony R
Renwick, Juanita
Reside, April
Rew‐Duffy, Miranda
Ritchie, Euan G
Roach, Chris P
Robley, Alan
Rog, Stefanie M
Rout, Tracy M
Schlacher, Thomas A
Scomparin, Cyril R
Sitters, Holly
Smith, Deane A
Somaweera, Ruchira
Spencer, Emma E
Spindler, Rebecca E
Stobo‐Wilson, Alyson M
Stokeld, Danielle
Streeting, Louise M
Sutherland, Duncan R
Taggart, Patrick L
Teixeira, Daniella
Thompson, Graham G
Thompson, Scott A
Thorpe, Mary O
Todd, Stephanie J
Towerton, Alison L
Vernes, Karl
Waller, Grace
Wardle, Glenda M
Watchorn, Darcy J
Watson, Alexander W T
Welbergen, Justin A
Weston, Michael A
Wijas, Baptiste J
Williams, Stephen E
Woodford, Luke P
Wooster, Eamonn I F
Znidersic, Elizabeth
Luskin, Matthew S
Abstract
<p>Camera traps are widely used in wildlife research and monitoring, so it is imperative to understand their strengths, limitations, and potential for increasing impact. We investigated a decade of use of wildlife cameras (2012–2022) with a case study on Australian terrestrial vertebrates using a multifaceted approach. We (<i>i</i>) synthesised information from a literature review; (<i>ii</i>) conducted an online questionnaire of 132 professionals; (<i>iii</i>) hosted an in-person workshop of 28 leading experts representing academia, non-governmental organisations (NGOs), and government; and (<i>iv</i>) mapped camera trap usage based on all sources. We predicted that the last decade would have shown: (<i>i</i>) exponentially increasing sampling effort, a continuation of camera usage trends up to 2012; (<i>ii</i>) analytics to have shifted from naive presence/absence and capture rates towards hierarchical modelling that accounts for imperfect detection, thereby improving the quality of outputs and inferences on occupancy, abundance, and density; and (<i>iii</i>) broader research scales in terms of multi-species, multi-site and multi-year studies. However, the results showed that the sampling effort has reached a plateau, with publication rates increasing only modestly. Users reported reaching a saturation point in terms of images that could be processed by humans and time for complex analyses and academic writing. There were strong taxonomic and geographic biases towards medium–large mammals (>500 g) in forests along Australia’s southeastern coastlines, reflecting proximity to major cities. Regarding analytical choices, bias-prone indices still accounted for~50% of outputs and this was consistent across user groups. Multi-species,multi-site and multiple-year studies were rare, largely driven by hesitancy around collaboration and data sharing. There is no widely used repository for wildlife camera images and the Atlas of Living Australia (ALA) is the dominant repository for sharing tabular occurrence records. However, the ALA is presence-only and thus is unsuitable for creating detection histories with absences, inhibiting hierarchical modelling. Workshop discussions identified a pressing need for collaboration to enhance the efficiency, quality and scale of research and management outcomes, leading to the proposal of a Wildlife Observatory of Australia (WildObs). To encourage data standards and sharing, WildObs should (<i>i</i>) promote a metadata collection app; (<i>ii</i>) create a tagged image repository to facilitate artificial intelligence/machine learning (AI/ML) computer vision research in this space; (<i>iii</i>) address the image identification bottleneck <i>via</i> the use of AI/ML-powered image-processing platforms; (<i>iv</i>) create data commons for detection histories that are suitable for hierarchical modelling; and (<i>v</i>) provide capacity building and tools for hierarchical modelling. Our review highlights that while Australia’s investments in monitoring biodiversity with cameras position it to be a global leader in this context, realising that potential requires a paradigm shift towards best practices for collecting, curating, sharing and analysing ‘Big Data’. Our findings and framework have broad applicability outside Australia to enhance camera usage to meet conservation and management objectives ranging from local to global scales. This review articulates a country/continental observatory approach that is also suitable for international collaborative wildlife research networks.</p>
Citation
Biological Reviews, p. 1-26
ISSN
1469-185X
1464-7931
Link
Language
en
Publisher
Wiley-Blackwell Publishing Ltd
Title
Large-scale and long-term wildlife research and monitoring using camera traps: a continental synthesis
Type of document
Journal Article
Entity Type
Publication

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